The stacker is technicially the 6 foot version of this kite range which also come in 8 foot and 10 foot versions The range is both easy to use and have some pull (power). The different sizes (6, 8 and 10 foot)are available for people of different sizes, strengths and ability. They are also stackable so that power can be increased down the line. The largest stack I have flown is six 10 foot kites at Weymouth beech at this years beech kite festival. While these kites are not the primary kites for buggying or surfing (they can be used for the former) they are great for those with limited (but some) experience with two line kites who want something capable of giving you a really good workout. They also offer a good engine for scudding and jumping (if you are foolish enough to try the latter). The kites are cheap (compared to other power kites) starting at under £70 plus lines and handles. They are usable in pretty much any wing conditions above calm (i.e. none) but care should be taken in high winds as power kiting can be dangerous in such conditions. Apart from anything else a stack of these looks (and feels) very impressive even to hardened kite flyers. If you are unsure about wanting a power kite then go along to a festival and most stores and certainly flyers are usually only to happy to give you a go. Be careful though you may well become adicted.